Tibco Interview Questions

TIBCO INTERVIEW QUESTIONS AND ANSWERS

13.What is the purpose of the inspector activity ?

The Inspector activity is used to write the output of any or all activities and process variables to a file and/or stdout. This is particularly useful when debugging process definitions and you wish to see the entire schema instead of mapping specific elements to the Write File activity.

14.What are the maximum/minimum of threads available for incoming HTTP ?

The maximum/minimum of threads available for incoming HTTP : 75/10

15.How can unauthorized users be prevented from triggering a process ?

Unauthorized users be prevented from triggering a process by giving 'write' access for the process engine to only selected users. Only users with 'write' access can do activities like deploying applications, starting/stopping process engines etc.

16.What are the mandatory configuration parameters for FTP Connection & FTP with firewall ?

The mandatory configuration parameters for FTP Connection

• FTP host
• Port
• Username & Password>

If Firewall is enabled in addition the proxy host and port are required.

17.how to design a process such that depending on number of records updated in a database, 3 different sub-processes may be called ?

Define 3 transitions from JDBC update with condition on the no of updates and call appropriate child processes.

18.How to use legacy .dat file format with latest designer ?

Convert .dat file to multi file project using Administration tab while starting up Designer(Other one being Project tab) and then open the multifile project in the normal way.

19.What are the encodings supported by designer ?

Encodings supported by designer are

• ISO8859-1(Latin-1)
• UTF-8

20.What are the 4 main panels of the Designer window ?

The 4 main panels of the Designer window are

• Project panel
• Palette panel
• Design panel
• Configuration panel

21.How do you determine if there are broken references in the project?

Project -> Validate for deployment

22.Where are the Designer preferences stored ?

Designer preferences stored are stores in a file called 'Designer <ver>.prefs' in the user home directory.

23.Explain the process configuration parameters - Max Jobs, Flow Limit & Activation Limit ?

• Max Jobs :

Max Jobs specifies the number of process instances that are kept in memmory. Once this limit is reached newly created process instances (subject to flow limit) are paged out to disk.0 specifies no limit and is the default.

• Flow Limit :

Flow Limit specifies the maximum number of running process instances that are spawned before the process starter is suspended ie it enters a FLOW_CONTROLLED state and does not accept new events. This can be used to control the number of process instances running simultaneously and when the protocol generating the event can store the event till it is received, like email servers, JMS, RV etc. 0 specifies no limit and is the default.

• Activation Limit :

Activation limit flag specifies that once a process instance is loaded it must be placed in memmory till it completes execution. By default it is enabled.

24.What are the options for configuring storage for process engine's checkpoint repository ?

The options for configuring storage for process engine's checkpoint repository are:

• Local File
• Database. Fault tolerant engines can recover from a checkpoint only when database is used.

25.Process engines in a fault tolerant group can be configured as peers or master secondary.How do these differ ?

The options for configuring storage for process engine's checkpoint repository are:

• - Peer means all of them have the same weight. In this case when one engine fails another one takes over and continues processing till it fails.
• - In master secondary configuration weights are unequal, the secondary starts processing when master fails. But when master recovers, secondary stops and master continues processing.